Brush

ABSTRACT

A brush, such as a lipstick brush, includes an outer body or ferrule having a generally oval forward portion in which a feeder or nozzle is disposed, the nozzle projecting beyond the forward end of the forward portion, a tuft of hair, or other bristles, being secured in the space between the exterior of the nozzle and the inner wall of the forward portion of the body, the tuft extending axially outwardly beyond the forward end of the nozzle. The brush is made by applying glue to the rear portion of the tuft after insertion of the latter through the rear of the body to place the rear portion of the tuft within the forward portion of the body, and with the forward portion of the tuft projecting beyond the end of the body. With the glue still wet, the nozzle, with a point at its forward end, is then inserted through the rear of the body in coaxial relation therewith, the point and nozzle entering the rear portion of the tuft until the point and forward end of the nozzle extend beyond the forward end of the body, to secure the tuft between the nozzle and wall of the forward body portion. The point is then removed to provide an ubobstructed nozzle passage through which a fluent substance can be forced.

United States Patent [191 Spatz [111 3,802,023 [451 Apr. 9, 1974 BRUSH [75] Inventor: Walter B. Spatz, Santa Monica,

Calif.

[73] Assignee: Spatz Corporation, Venice, Calif.

[22] Filed: Dec. 6, 1971 [211 Appl. No.: 205,214

[52] US. Cl 15/192, 15/DlG. 4, 401/175 [51] Int. Cl. A46b 3/02, A46b 11/00 [58] Field of Search 401/175, 173, 171; 15/191,

15/192, 193, DIG. 4

Primary E.raminerPeter Feldman Attorney, Agent, or FirmBernard Kriegel [57] ABSTRACT A brush, such as a lipstick brush, includes an outer body or ferrule having a generally oval forward portion in which a feeder or nozzle is disposed, the nozzle projecting beyond the forward end of the forward portion, a tuft of hair, or other bristles, being secured in the space between the exterior of the nozzle and the inner wall of the forward portion of the body, the tuft extending axially outwardly beyond the forward end of the nozzle. The brush is made by applying glue to the rear portion of the tuft after insertion of the latter through the rear of the body to place the rear portion of the tuft within the forward portion of the body, and with the forward portion of the tuft projecting beyond the end of the body. With the glue still wet, the nozzle, with a point. at its forward end, is then inserted through the rear of the body in coaxial relation therewith, the point and nozzle entering the rear portion of the tuft until the point and forward end of the nozzle extend beyond the forward end of the body, to secure the tuft between the nozzle and wall of the forward body portion. The point is then removed to provide an 1 11 Claims, 11 Drawing Figures BRUSH The present invention relates to brushes, and more particularly to brushes adapted to constitute the forward part of applicators used in applying fluent substances, such as lipstick and mascara, to the associated surfaces of a person.

Heretofore, brushes of small size, such as those used for applying lipstick, have involved difficulties in production on a mass basis, and have involved corresponding relative high costs. The bristles of-the brush release and are lost, limiting the effective life of the brush.

In accordance with the present invention, a brush is provided capable of economical production at a lesser cost than heretofore, and with assurance that the bristles will be retained in the brush body. More specifically, the brush is of the dispensing type with the bristles firmly adhesively or otherwise secured between a central dispensing nozzle for fluent materials and a brush body surrounding the nozzle. The brush construction is such that the fluent mass, such as lip cream, dispenses through the nozzle or feeder and does not tnd to ooze sideways from the forward nozzle orifice near the rear portion of the bristles, such fluent mass flowing lengthwise of the bristles and into their freely flexible forward portion, for more effective application to a person. I

This invention possesses many other advantages and has other purposes which may be made more clearly apparent from a consideration of several forms and method embodying the invention. These forms and method are shown and described in the present specification and in the drawings accompanying and constituting a part thereof. They will now be described in detail, for the purpose of illustrating the general principles of the invention; but it is to be understood that such detailed description is not to be taken in a limiting sense.

Referring to the drawings:

FIG. 1 is a longitudinal section through a cosmetic applicator having a brush at its forward portion, with the forward portion disclosed inside elevation;

FIG. 2 is a longitudinal section through the forward portion of the applicator, on an enlarged scale, taken along the line 2-2 on FIG. 1; I

FIG. 3 is a longitudinal'section taken along the line 3-3 on FIG. 2;

FIG. 4 is an-enlarged section taken along the line 4-4 on FIG. 3;

FIG. 5 is an enlarged cross-section taken along the line 5-5 on FIG. 3;

FIG. 6 is an enlarged cross-section taken along the lines 6-6 on FIG. 3; line Q FIG. 7 is a longitudinal section, withparts shown in side elevation, of a fixtureused in assembling components of the brush, and with such components mounted on the fixture;

FIG. 8 is an enlarged longitudinal section of the forward portion of the nozzle constituting part of the dispensing brush, with one embodiment of separator mounted therein;

FIG. 9 is a view similar to FIG. 8 illustrating another type of separator at the forward portion of the nozzle;

FIG. 10 is a cross-section taken along the line 10-10 on FIG. 9; and

FIG. 11 is a section through the nozzle'shown in FIGS. 9 and 10, illustrating the manner of drilling out or removing the separator, after the nozzle has been assembled within the tuft and housing or ferrule.

A brush structure 10 is illustrated in the drawings as constituting the forward portion of a dispenser 11 that includes an elongate cylindrical body or container 12 having a forward nose portion 13 through which a fluent mass M, such as lipstick, in the container is to be dispensed. The forward nose portion has a ferrule or body extension 14 of the brush press-fit thereon, with its end engaging a nose shoulder 15, there being a nozzle 16 mounted within the body extension 14 having a rearward head 17 press-fit within the ferrule, the rearward end of the head engaging the end of the nose l3 and its forward end engaging spaced flanges 18 in the ferrule. The nozzle has an outlet or orifice 19 at its forward end projecting forwardly of the orifice 20 of the ferrule. A pony tuft 21, or other brush-like device, is disposed between the nozzle 16 and ferrule 14, project ing forwardly of the nozzle orifice 19, the fluent mass M in the container being adapted to be dispensed through the nozzle passage 22 and into the brush portion 21a extending forwardly thereof.

When not in use, a cylindrical cover 23 having an end 7 wall 24 may be slipped over the brush device and nose portion of the container, the rear portion of the cover or cap frictionally engaging a reduced diameter exterior portion 25 of the container, with the rear end of the cover bearing against a container shoulder 26. When the dispenser is to be used, the cover 23 may be readily removed from the container.

A piston 27' is disposed in, the container 12 rearwardly of the fluent mass M, this piston comprising a main body 28, the forward portion 29 of which tapers towards the outlet end of the container, to conform to the extent of taper of'the forward portion 30 of the con- I tainer adjacent tothe nose 13. The rear portion of the body of the piston or chaser comprises a circumferential lip seal 31 facing in a forward direction and adapted to slidably seal against the inner cylindrical wall 32 of the container to prevent leakage of the fluent mass relatively rearwardly past the piston when the piston is shifted in a forward, dispensing direction. This lip seal frictionally engages the cylindrical wall of the container to resist rotation of the piston therein. The piston body 28 has a socket 33 therein extending from a forward wall 34 of thepiston and opening through the rear of the piston. This socket has longitudinally spacedinternal non-circular, such as hexagonal, walls 35 separated by a circumferential internal rib 36, and receiving the forward portion 37 of an externally threaded, elongate screw-feed shaft 38, such forward portion including companionlongitudinally spaced hexagonally shaped heads 37a snugly fitting within the hexagonal walls 35 of the piston, the hexagonal heads being separated by a circumferential groove 39-adapted to receive the rib 36.

The parts illustrated in the drawings are preferably made of synthetic resins having sufficient elasticity, such that the forward head portion 37 of the screw shaft 38 can be forced into the socket the intermediate rib 36and the rea rib 36a of the socket deflecting outwardly sufficiently to enable location of the hexagonal shaft heads 37a within the companion hexagonal walls 35 of .the piston. As an example, the' piston may be made of polyethylene; whereas, the screw-feed shaft may be made of acetal. The major portion of the screw shaft is preferably formed with an external left-hand thread, the thread preferably being of multiple start, such as a two-start thread.

For the purpose of feeding the piston 27 forwardly in the container 12 to dispense the fluent mass therein through the outlet end of the container, a nut device 40 is threadedly associated with the screw shaft 38. As shown, the nut device comprises a hollow drive shaft 41 rotatably mounted in the container 12 and prevented from shifting axially with respect thereto. Thus, the forward head 42 of the hollow shaft has internal threads, such as left-hand threads, meshing with the external left-hand threads of the screw shaft. The portion of the hollow shaft rearwardly of its head is out of engagement with the screw threaded shaft, the hollow shaft extending rearwardly from its head 42 and terminating in an enlarged wheel-like member or knob 43 extending beyond the rear end of the container 12. The wheel has a rim portion 44 containing finger-gripping ribs 44a, an intervening disc 45 integrating such rim with the hollow shaft 41. The wheel includes a skirt portion 46 extending forwardly into the container 12 and provided with an external circumferential groove 47 receiving an inwardly directed circumferential rib 48 of the container to permit rotation of the wheel and of the hollow shaft 41 within the container, the groove 47 receiving the container rib 46 being defined by a forwardly facing wheel shoulder 49 and an external rib 50 on the sleeve 46 engaging the container rib 48, to prevent longitudinal movement in both directions of the wheel 43 and of the hollow drive shaft 41 integral therewith.

The rotary motion of the wheel 43 is imparted to the hollow shaft 41 integral therewith and to the internally threaded head 42 of the latter. Such rotary motion effects longitudinal movement of the piston shaft 38 and of the piston 27 itself, the frictional engagement of the lip seal 31 with the container 12 preventing rotation of the piston and the screw shaftpThus, turning of the wheel 43 and drive shaft 41 in a right-hand direction will cause the screw shaft 38 and piston 27 to move forwardly in the container 12 and force a portion of the fluent mass M through the nose 13, nozzle 16 and into the brush 21 associated therewith. Reverse rotation of the hollow drive shaft 41 effects longitudinal rearward movement of the screw shaft 38 and piston 27 secured thereto.

In the brush specifically disclosed, the rear portion 14a of the body or ferrule 14 is of cylindrical shape having an external flange 60 at its rear end, the inner wall 61 of such rear portion being cylindrical. The forward portion 62 of the hollow body tapers from the forward end of the rear portion and is of generally oval or non-circular shape, as disclosed most clearly in FIG. 4. The maximum major diameter 63 of the inner wall 64 of the forward body portion may be substantially equal to the diameter of the rear wall 61; whereas, the minor diameter or axis 65 of the inner wall of the oval shape may be substantially equal to or slightly greater than the diameter of the tapered feeder or nozzle 16 where it merges into the nozzle head 17, this head conforming to the inside diameter of the rear body wall 61. The tuft of hair 21 within the annular space between the exterior of the tapered portion of the nozzle and the inner ovalwall 64 of the body has its rear portion 21b also of annular and externally oval shape, the free bristles 21a of the tuft forwardly of the forward end or orifice of the body also being of generally oval form. The rear portion 21b of the bristles adhere to one another through the use of a suitable adhesive or glue applied thereto, these bristles also being adhesively secured to the tapered nozzle 16 and the oval and tapered wall 64 of the forward body portion 62. The bristles are thereby firmly and securely anchored between the nozzle 16 and the body 14.

The nozzle passage 22 is free and unobstructed to permit freedom of flow of the fluent or cream material M from the container 12 and through the passage for discharge to the interior of the tuft 21a forwardly of the nozzle outlet or orifice 19. It is to be noted that the outlet or orifice 19 of the nozzle projects axially forwardly beyond the forward end 20 of the body. Because of this relationship of the orifice l9 projecting by a significant margin beyond the body outlet 20, the fluent material or cream mass passing out of the nozzle passage 22 will not tend to ooze sideways near the root of the brush, but, instead, flows forwardly along the length of the brush to provide a more uniform application of the material to the forward tuft 21a.

The brush structure 10, including the body 14, nozzle 16 and tuft 21, is produced by inserting such tuft through the rear 14a of the body and into its forward portion, the rear end of the tuft being disposed substantially at the stop shoulders 18 of the housing against which the nozzle head 17 is to bear, and then applying a suitable glue to the rear portion 21b of the tuft to be confined within the forward portion 62 of the body. The nozzle 16 initially has a torpedo or separator inserted therewithin (FIGS. 7, 8), which includes a shank 71 of cylindrical form conforming to the forward cylindrical wall of the nozzle or orifice 19, this shank having a rear extension 71a extending rearwardly within the passage 22 to a significant extent. The forward portion 72 of the torpedo is constituted as a conical member or separator having a rear shoulder 73 bearing against the forward end of the nozzle 16.

The nozzle 16, with the torpedo 70 mounted therein, is inserted through the rear 14a of the housing, the conical end 72 of the torpedo piercing the central portion of the tuft 21 and separating such portion, the separation continuing as the nozzle moves forwardly within the tuft until the head 17 of the nozzle engages the body flanges 18, which will determine the extent of forward projection of the nozzle orifice l9 beyond the forward end 20 of the body. Such piercing of the tuft by the forward point 72 of the torpedo and by the nozzle itself occurs while the glue coating the rear portion 21b of the tuft is still wet. As described above, the rear portion of the tuft is firmly secured by the glue against the nozzle periphery and the oval wall 64 of the forward portion of the body, the bristles of the tufts themselves being glued to one another when the glue sets. The forward conical portion 72 of the torpedo is preferably coated with a suitable adhesive repellent to prevent the adherence of glue thereto. As an example, such repellent may be polytetrafluoroethylene (Teflon) which will slide readily along the bristles and facilitate the entry of the nozzle 16 thereinto. After the nozzle has been fully inserted within the body 14, the torpedo 70 is ejected through use of a suitable tool (not shown) inserted through the rear of the body and nozzle passage 22 and bearing against the rear end of the torpedo shank 71. Such ejecting of the torpedo leaves the passage 22 in a free and clean state to insure against restrictions to flow of the fluent mass therethrough. The

conical point 72 closes the forward end of the nozzle passage and prevents any glue or other foreign substances from entering thereinto. The head 17 of the nozzle insures the coaxiality of the nozzle within the body 14, by virtue of the conformance of the external diameter of the head with the internal diameter of the cylindrical rear body wall 61.

As an alternative to a separate torpedo 70 placed within the nozzle 16, the nozzle may be formed with a forward conical point 72a, such as disclosed in FIG. 9, which may also be coated with polytetrafluoroethylene. Such point will properly guide or facilitate entry of the nozzle 16 within the tuft 21 disposed within the body 14 of the brush, performing the same function as the torpedo. After the nozzle 16 has been appropriately mounted in place within the body 14 and brush 21, the conical point of the nozzle is drilled out, leaving the nozzle passage 22 free of obstructions (FIG. 11).

In order to insure the concentric mounting of the nozzle 16 and torpedo 70, or nozzle 16 with its initially integral point 72a, within the body 14 and mass of bristles, the fixture illustrated in FIG. 7 may be used. This fixture includes a suitable frame 80 having spaced forward and rearward arms 81, 82. The rear arm 82 has a suitable bushing 83 mounted therein in which a shaft 84 is slidably mounted, this shaft having a forward shoulder 85 and a tapered pin 86 integral therewith extending forwardly from the shoulder, the taper of the pin conforming to the taper of the inner wall of the nozzle 16. The nozzle is mounted on the tapered pin 86 with the rear end of the nozzle abutting against the shoulder 85, as illustrated in FIG. 7, the torpedo 70 being mounted in the forward portion of the nozzle. The bushing 83 and shaft 84 are concentric with a sleeve 87 rigidly mounted within theforward arm 81 and having an, inner wall 88 conforming to the periphery of the body or ferrule 14 of the brush.

The body 14 is inserted into the sleeve 87 to an extent limited by engagement of the body flange 60 with the rear end of the sleeve 87, the engagement of the periphery of the body with the inner wall 88 of the sleeve insuring the coaxial relationship between the nozzle 16 and its torpedo 70 with the brush body 14. The pony tuft 21, or other specific'tuft, may have previously been inserted into the body 87, or may be inserted after the body 14 has been mounted within its holding sleeve87. In any event, when the brush parts have'all been re lated, as disclosed in FIG. 7, the shaft 84 is moved'forwardly to insert the nozzle 16 with the torpedo 70 in its forward end concentrically into the body 14'and into the rear portion 21b of the tufts tothe extent limited by engagement of the forward portion of the nozzle head 17 with the body shoulders 18..The shaft 84 can then be retracted, the assembled nozzle '16, torpedo 70, tuft 21 and body 14 removed from the forward sleeve 87, and the torpedo 70 drivenforwardly out of the nozzle through use of a suitable tool inserted into the body 14 and nozzle passage 22.-As stated above, if the FIG. 9 to 11 embodiment is used, the point 72a can be drilled out.

I claim:

1. In a brush: an outer tubular member having an inner wall; an inner member disposed within said outer member and having an outer wall in spaced relation to said inner wall to define an annular space therebetween; and a brush tuft in said annular space secured between said walls, said tuft extending longitudinally outwardly beyond the forward ends of said outer and inner members; one of said walls being inclined with respect to said other wall and being non-parallel to the opposed portion of said other wall.

2. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member.

3. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall.

4. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapered walls.

5. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outermember having a cylindrical inner wall portion rearwardly of said tapering portion of said inner wall, said inner member having ahead conforming to and disposed within said cylindrical inner wall portion.

6. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction twoard the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall; said inner mcmbcr having'a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion.

7. In a brush as defined in claim .1; said inclined one of said walls being said inner wall, said inner. wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; saidouter member having a cylindrical inner wall portion rearwardly of said tapering inner wall; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion; the

inner portion of said tuft within said annular space having an adhesive for securing bristles of said inner portion to each other and said inner portion to said tapering walls.

8. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward in a direction toward the forward end of said inner member and with respect to said tapered inner wall.

9. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular crosssection and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said tapered inner wall; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapering walls.

10. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of inner member and said tapered inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall portion; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion.

11. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and said tapered inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall portion; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapered walls.

-."'/f"-"' uiQzin-m ffidfA'fltlti l'A'iiCNi or'ruczac W (1:915:11.means 0:1 10m5:1541mm l'nLn-nt Nu. E: Dated April 9, 974

LmwnLozQ-J 6' Walter B. Spatz 1t 1;; ccrLiZicd that ci'ror appears in the abovcwidcntificc] patent and 1.215.: said Letters Patent are hc'gcby corree tcd as s 'nox m below;

ABST'CT, -lii'le 22: change' "ubobstructed" 1:0

' --=imobstructed-- CQlunnn 1; line 21: change-fiend! to "tend- I line 53: cancel "line". 7

Column 2 line 60: after "socket" insert line 61: change "rea" to --rear--.

Column 6, line 37: change "twoard" to --toward sighed and seiled this 17th day of September 1974:

(SEAL) Attest: MCCOY 1 1. GIBSONJR. w co MARSHALL DANN Attesting Officer Commissioner of Patents 

1. In a brush: an outer tubular member having an inner wall; an inner member disposed within said outer member and having an outer wall in spaced relation to said inner wall to define an annular space therebetween; and a brush tuft in said annular space secured between said walls, said tuft extending longitudinally outwardly beyond the forward ends of said outer and inner members; one of said walls being inclined with respect to said other wall and being non-parallel to the opposed portion of said other wall.
 2. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member.
 3. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall.
 4. In a brush as defined in claim 1; said inclined one of said walls being said inneR wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapered walls.
 5. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer member having a cylindrical inner wall portion rearwardly of said tapering portion of said inner wall, said inner member having a head conforming to and disposed within said cylindrical inner wall portion.
 6. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion.
 7. In a brush as defined in claim 1; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said inclined inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion; the inner portion of said tuft within said annular space having an adhesive for securing bristles of said inner portion to each other and said inner portion to said tapering walls.
 8. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said tapered inner wall.
 9. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and with respect to said tapered inner wall; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapering walls.
 10. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and said tapered inner wAll; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall portion; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion.
 11. In a brush as defined in claim 1; said inner member having a passage extending therethrough; the forward end of said inner member extending longitudinally within said tuft and beyond the forward end of said outer member; said inclined one of said walls being said inner wall, said inner wall being of non-circular cross-section and tapering in a direction toward the forward end of said outer member; said outer wall also tapering in a direction toward the forward end of said inner member and said tapered inner wall; said outer member having a cylindrical inner wall portion rearwardly of said tapering inner wall portion; said inner member having a head rearwardly of said tapering outer wall and conforming to and disposed within said cylindrical inner wall portion; the inner portion of said tuft within said annular space having an adhesive for securing the bristles of said inner portion to each other and said inner portion to said tapered walls. 